Image-pickup apparatus, lens apparatus and image-pickup system

Abstract

The image-pickup apparatus includes a controller that controls the energization of the actuator for driving the aperture stop. The controller receives from a lens apparatus information on a time period for controlling the energization of the actuator, the information being set corresponding to the type of the actuator. During an image-pickup period in a state in which the aperture stop has been driven to a target aperture position, the controller outputs to the lens apparatus an instruction for stopping the energization of the actuator or reducing the energization amount thereof in response to the elapse of the time period. This can reduce power consumption.

1. An image-pickup apparatus configured to receive a lens apparatus including an aperture stop and an actuator for driving the aperture stop, the image-pickup apparatus comprising:
 a controller that controls energization of the actuator for driving the aperture stop, 
 wherein the controller receives from the lens apparatus information on a time period for controlling the energization of the actuator, the information being set corresponding to the type of the actuator, 
 wherein, during an image-pickup period in a state in which the aperture stop has been driven to a target aperture position, the controller outputs to the lens apparatus an instruction for stopping the energization of the actuator or reducing an energization amount thereof in response to the elapse of the time period, and 
 wherein the type of the actuator is determined based on a difference in ability of holding a rotation position of the actuator in a state where the energization thereof is stopped or a difference in package material of the actuator. 
 
   
   
     2. An image-pickup system including an image-pickup apparatus and a lens apparatus, the image-pickup system comprising:
 the lens apparatus including:
 an aperture stop; 
 an actuator for driving the aperture stop; 
 a memory that stores information on a time period for controlling energization of the actuator, the information being set corresponding to the type of the actuator; and 
 a communication unit that outputs the information to the image-pickup apparatus; 
 the image-pickup apparatus including; 
 a controller that controls energization of the actuator for driving the aperture stop; 
 wherein the controller receives from the lens apparatus information on the time period for controlling the energization of the actuator; 
 wherein, during an image-pickup period in a state in which the aperture stop has been driven to a target aperture position, the controller outputs to the lens apparatus an instruction for stopping the energization of the actuator or reducing an energization amount thereof in response to the elapse of the time period, and 
 
 wherein the type of the actuator is determined based on a difference in ability of holding a rotation position of the actuator in a state where the energization thereof is stopped or a difference in package material of the actuator. 
 
   
   
     3. A lens apparatus including an aperture stop and an actuator configured to drive the aperture stop, the lens apparatus configured to be detachably mounted to an image-pickup apparatus which includes a controller configured to control energization of the actuator for driving the aperture stop, the lens apparatus comprising:
 a memory that stores information on a time period for controlling energization of the actuator for driving the aperture stop, the information being set corresponding to the type of the actuator; and 
 a communication unit that outputs the information to the image-pickup apparatus, 
 wherein the controller receives from the lens apparatus information on a time period for controlling the energization of the actuator, the information being set corresponding to the type of the actuator, 
 wherein, during an image-pickup period in a state in which the aperture stop has been driven to a target aperture position, the controller outputs to the lens apparatus an instruction for stopping the energization of the actuator or reducing an energization amount thereof in response to the elapse of the time period, and 
 wherein the type of the actuator is determined based on a difference in ability of holding a rotation position of the actuator in a state where the energization thereof is stopped or a difference in package material if the actuator. 
 
   
   
     4. An image-pickup apparatus configured to receive a lens apparatus including an aperture stop and an actuator for driving the aperture stop, wherein the lens apparatus outputs information on the type of an actuator for driving the aperture stop and the image-pickup apparatus receives the information, the image-pickup apparatus comprising:
 a controller that controls energization of the actuator, 
 wherein, during an image-pickup period in a state in which the aperture stop has been driven to a target aperture position, the controller outputs to the lens apparatus an instruction for stopping the energization of the actuator or reducing an energization amount thereof in response to the elapse of a time period set corresponding to the information, and 
 wherein the type of the actuator is determined based on a difference in ability of holding a rotation position of the actuator in a state where the energization thereof is stopped or a difference in package material of the actuator. 
 
   
   
     5. An image-pickup system including an image-pickup apparatus and a lens apparatus, the image-pickup system comprising:
 the lens apparatus including:
 an aperture stop; 
 an actuator for driving the aperture stop; and 
 a memory that stores information on the type of an actuator for driving the aperture stop; and 
 a communication unit that outputs the information to the image-pickup apparatus, 
 wherein the lens apparatus outputs information on the type of an actuator for driving the aperture stop and the image-pickup apparatus receives the information, 
 the image-pickup apparatus including:
 a controller that controls energization of the actuator, 
 wherein, during an image-pickup period in a state in which the aperture stop has been driven to a target aperture position, the controller outputs to the lens apparatus an instruction for stopping the energization of the actuator or reducing an energization amount thereof in response to the elapse of a time period set corresponding to the information, and 
 wherein the type of the actuator is determined based on a difference in ability of holding a rotation position of the actuator in a state where the energization thereof is stopped or a difference in package material of the actuator. 
 
 
 
   
   
     6. A lens apparatus including an aperture stop and an actuator configured to drive the aperture stop, the lens apparatus configured to be detachably mounted to an image-pickup apparatus which includes a controller configured to control energization of the actuator for driving the aperture stop, the lens apparatus comprising:
 a memory that stores information on the type of an actuator for driving the aperture stop; and 
 a communication unit that outputs the information to the image-pickup apparatus, 
 wherein the lens apparatus outputs information on the type of an actuator for driving the aperture stop and the image-pickup apparatus receives the information, and 
 wherein, during an image-pickup period in a state in which the aperture stop has been driven to a target aperture position, the controller outputs to the lens apparatus an instruction for stopping the energization of the actuator or reducing an energization amount thereof in response to the elapse of a time period set corresponding to the information, and 
 wherein the type of the actuator is determined based on a difference in ability of holding a rotation position of the actuator in a state where the energization thereof is stopped or a difference in package material of the actuator.